Means for forming sheet-metal eaves-throughs.



PATENTED JULY 30,1907

A. K. EPRUDEN. MEANS FOR FORMING SHEET METAL BAVES TROUGHS.

APPLIOATION FILED FEB. 2'7, 1906.

nurrnn snares arana FFlE ALLAN K. PRUDI IN, OF ST. PAUL, MINNESOTA.

MEANS FOR FORlldIN G SHEET-METAL EAVES TROUGHS.

Specification of Letters Patent.

Patented July so, 1907.

Application filed February 27, 1906. Serial No. 303,167.

To all whom it may concern:

Be it known that I, ALLAN K. PRUDEN, a citizen of the United States,residing at St. Paul, in the county proved mechanism partly broken away,and Eig. 2 is I -a vertical cross section thereof.

In the drawings A represents the'lower or female die, and B the upper ormale die. The lower die consists of a horizontal plate 2 provided alongone side with an upwardly extending wall 3 constituting a fixed jaw. Thefixed jaw 3 is formed with a substantially halfoval shaped upper edge 4with an adjacent flange 5. Slidably supported upon the base plate 2'isan adjustable, elastically held, jaw 6 arranged parallel to the fixedjaw B. As shown, the jaw 6 has pivotal support 7 in a carriage 8slidably connected with the base plate 2 by means of bolts 9 extendingthrough slots 10 in said base plate. The carriage, 8 with the supportedjaw 6 {nay be adjusted toward and from the fixed jaw 3 by means of bolts11 connected with the carriage and extending through the fixed jaw. Toforman elastic support for the jaw 6 I provide springs 12 extendingupwardly from the carriage 8, adjusting screws 13 being carried by theupper ends of said springs and hearing at their inner ends against thejaw, as illustrated in the drawings.

The upper die consists of a suitably supported plunger 14 carrying atits'lower end a rounded head 15 secured thereto as by screws 16:Slidably secured to, the rear of the plunger 14', as by means of slotand pin connection 17, is a plunger 18, the lower face 19 of the plungerbeing shaped to conform to the upper face 4 of the fixed jaw 3. Theslidable plunger 18 is 'normally held forced downward by a coil spring20 surrounding a post 21 extending upwardly from the plunger through I ahorizontal flange 22 carried by the upper end of the plunger 14. I

In operation, I take a flat strip of sheetmetal 23 and insert it betweenthe dies as shown in Fig. 1 with one edge of the metal resting upon theupper face of the fixed jaw 3, and the rear part of the strip standingbetween the convexed head oi the plunger 14 and the open space betweenthe fixed and adjustable jaw of the lowet'f diet I then cassette twodies to be forced together whereupon the blank is clamped, formed andheld at its inner edge between the spring pressed plunger l8 and thefixed jaw 3. The lower end of the plunger 14 then carries the main partof the blank between i the adjustable jaw 6 and fixed jaw 3 of the lowerdie,

thus forming the main part of the blank closely around the head of theplunger 14, as illustrated in Fig. 2. As the plunger 14 descends betweenthe fixed and movable jaws of the lower die, it will turn the movablejaw upon its pivot 7 away from the fixed jaw, the springs 12 holding themovable jaw tightly against the blank between it and the plunger head.15. For different widths of trough the jaw 6 may be adjusted by meansof the screws 11 to or from the fixed jaw With my improved mechanism 1can place more than one blank between the dies to form a series oftrough sections in one operation. After the trough sections have beenformed, as shown in Fig. 2, the dies are forced to open position, whenthe blanks can be withdrawn and the formation of the bead completed inthe ordinary manner.

I claim:-

1. In an apparatus of the class described the combination of a femaledie comprising a fixed jaw and an opposed elastically held jaw', and amale die comprising a. plunger arranged to work between said fixed andelastically held jaws, and a spring pressed plunger opposed to-saidfixed jaw.

2. In an apparatus of the class described, the combination of a femaledie comprising a fixed jaw and a. movable elastically held jaw, and amale die comprising a plunger arranged to work between said fixed andelastically held jaws, and an attached slidably supported spring pressedplunger opposed to the outer edge of said fixed jaw, for the purpose setforth.

3. An apparatus of the class described comprising a fixed jaw, anopposed elastically held jaw, means for adjusting said elastically heldjaw toward and from said fixed jaw, a plunger arranged to pass betweensaid fixed and elastically held jaws, and a spring pressed plungerslidahly supported upon the rear side of said first mentioned plunger inopposition to the outerface of said fixed jaw.

4. An apparatus of the class described comprising in combination a fixedjaw having a ha1f-oval shaped face, an elastically held jaw, means foradjusting said elastically held jaw toward and from said fixed jaw, aplunger arranged to pass between said jaws, and a slidab'ly supportedspring pressed plunger having a face opposed to the face of said fixedjaw.

5. An apparatus of the class described comprising in combination a pairof relatively adjustable jaws, one of said jaws being elastically held,an opposed plunger urrauged to pass between said jaws, and a slidablysupported spring pressed plunger arranged in opposition to one of saidjaws, for the purpose set forth.

In testimony whereof I al'lix my signature in presence of two witnesses.

ALLAN K. PRUDEN.

Witnesses:

II. S. JOHNSON, EMILY F. OTIS.

